For these NFTs, you need to have an Enjin wallet installed. A collection of 3 NFTs will be dropped through the whole week on Enjin's Twitter account. You can simply click on the link or scan the QR code in order to claim it. The first NFT you can get right now is also animated.
You won't be able to transfer these NFTs outside of the ENJ ecosystem for now but it is supposed to change with the launch of their Jumpnet 1.2 solution.